Not cooked properly. Stir-fried silkworm with bran is a type of processed Chinese medicine. It is a traditional Chinese medicine obtained by adding wheat bran to stir-fry the silkworm until it turns dark yellow. Because it is not stir-fried thoroughly during the frying process, the color is not very yellow. , need to be sprinkled into the hot pan first during the frying process, and when heated to smoke, quickly turn it over, and then take it out after the surface turns yellow.